Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!zaphod.mps.ohio-state.edu!mips!sgi!shinobu!odin!dave
From: dave@sgi.com (dave "who can do? ratmandu!" ratcliffe)
Newsgroups: comp.sys.sgi
Subject: Re: question on gl
Message-ID: <1991Apr2.150125.22972@odin.corp.sgi.com>
Date: 2 Apr 91 15:01:25 GMT
References: <14144@medusa.cs.purdue.edu>
Sender: news@odin.corp.sgi.com (Net News)
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Organization: Silicon Graphics, Inc.
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In article <14144@medusa.cs.purdue.edu> avr@cs.purdue.EDU (Andrew V. Royappa) writes:
>The gl graphics user's guide says that the perspective & viewing
>transformations transforms the perspective pyramid into the box 
>-1.0 <= x,y,z <= 1.0, to facilitate clipping. Is this in fact
>the case, 
yep--this *is* the case -1.0 to 1.0 for x, y, *and* z clipping.

>           or are the box's bounds given by something else
>e.g. -1.0<=x,y<=1.0 and 0.0<=z<=1.0 ? 
nope.  this is not the case.
--
                                             daveus rattus   

                                   yer friendly neighborhood ratman

                              KOYAANISQATSI

   ko.yan.nis.qatsi (from the Hopi Language)  n.  1. crazy life.  2. life
       in turmoil.  3. life out of balance.  4. life disintegrating.  
         5. a state of life that calls for another way of living.